The mortars of the "Fortezza delle Verrucole-S. Romano in Garfagnana (LU)"

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Authors:Lezzerini, Marco
Author Affiliations:Primary:
Universita di Pisa, Dipartimento di Scienze della Terra, Pisa, Italy
Volume Title:Periodico di Mineralogia
Source:Periodico di Mineralogia, 74(1), p.55-67. Publisher: Bardi Editore, Rome, Italy. ISSN: 0369-8963
Publication Date:2005
Note:In English. 11 refs.; illus., incl. sketch map, 6 tables, anals.
Summary:Twenty-one mortar samples taken from the walls in the southwest side of the Fortezza delle Verrucole (IX-XVIII century)--S. Romano in Garfagnana (Lucca, Italy)--have been analysed to characterise their binder and aggregate fractions. The chemical, mineralogical, petrographic and physical data collected on the bulk mortar samples show that the stone walls were built up using different mortars. The mortars with a hydraulic binder are prevailing on those with an air-hardening lime binder. The older mortars, coming from the walls built before the XV century, were produced mixing lime putty with locally available sands. They are characterized by a sandy aggregate with grain size from medium to very coarse and by a number of snow-white lumps, due to a not complete mixing between binder and aggregate. This last feature suggests that the mortars were prepared, as it was usual in ancient times, hand-mixing the lime putty added to the sand. Hydraulic and highly hydraulic limes and, perhaps, cement mortars were later employed during operation of renovating and restoring.
Sections:Various topics
Subjects:Aggregate; Archaeological sites; Arenite; Breccia; Bulk density; Carbonate rocks; Cement; Cenozoic; Chemical composition; Clastic rocks; Clastic sediments; Clay; Construction materials; Cretaceous; Diabase; EDS spectra; Feldspar group; Framework silicates; Grain size; Gravel; Graywacke; Holocene; Igneous rocks; Jurassic; Lava; Lime; Limestone; Marl; Mesozoic; Mica group; Microscope methods; Middle Ages; Neogene; Ophiolite; Paleogene; Pebbles; Petrography; Physical properties; Pillow lava; Plutonic rocks; Porosity; Provenance; Quarries; Quartz; Quaternary; Sand; Sandstone; Saturation; Sedimentary rocks; Sediments; SEM data; Shale; Sheet silicates; Silica minerals; Silicates; Spectra; Stream sediments; Tertiary; Thermogravimetric analysis; Upper Jurassic; X-ray diffraction data; X-ray fluorescence spectra; X-ray spectra; Europe; Italy; Lucca Italy; Southern Europe; Tuscany Italy; Fortezza delle Verrucole; Macigno Formation; Mortar; Serchio River
Coordinates:N435000 N435000 E0103000 E0103000
Abstract Numbers:05M/2411
Record ID:2005068419
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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